Growing community of inventors

Beamsville, Canada

W Thomas Digweed

Average Co-Inventor Count = 3.20

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 13

W Thomas DigweedJeffrey D Reid (2 patents)W Thomas DigweedAlbert A McKay (1 patent)W Thomas DigweedEric G Smith (1 patent)W Thomas DigweedUlf Stahmer (1 patent)W Thomas DigweedTrevor A Scott (1 patent)W Thomas DigweedStanley J Pasek (1 patent)W Thomas DigweedDavid A Porteous (1 patent)W Thomas DigweedEric G Smith (1 patent)W Thomas DigweedStanley John Pasek (1 patent)W Thomas DigweedJeffrey D Reid (1 patent)W Thomas DigweedAlbert A Mckay (1 patent)W Thomas DigweedW Thomas Digweed (2 patents)Jeffrey D ReidJeffrey D Reid (4 patents)Albert A McKayAlbert A McKay (26 patents)Eric G SmithEric G Smith (16 patents)Ulf StahmerUlf Stahmer (7 patents)Trevor A ScottTrevor A Scott (3 patents)Stanley J PasekStanley J Pasek (2 patents)David A PorteousDavid A Porteous (2 patents)Eric G SmithEric G Smith (1 patent)Stanley John PasekStanley John Pasek (1 patent)Jeffrey D ReidJeffrey D Reid (1 patent)Albert A MckayAlbert A Mckay (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Westinghouse Air Brake Company (2 from 582 patents)

2. Albert A. Mckay (0 patent)

3. Ulf Stahmer (0 patent)

4. Eric G. Smith (0 patent)

5. David A. Porteous (0 patent)

6. Stanley John Pasek (0 patent)

7. Jeffrey D. Reid (0 patent)

8. Trevor A. Scott (0 patent)

9. W. Thomas Digweed (0 patent)


2 patents:

1. 5559281 - Test connector for accessing compressed air at test ports of a railroad

2. 5293777 - Hinged assembly for air brake valve test fixture

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as of
1/2/2026
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